Congratulations, and thanks for the post. Really pisses me off though since I broke 7 of 8 following the TSB except using PB Blaster and "extra" precautions. Total time about 12 hours. Got the first one out clean (#1 cyl), but the rest broke. Not so hard but aggravating and time consuming. I will have to look up that "Yield". Others swear by Kroil too.